
	/**
	 * DES加密/解密
	 * 
	 * @Copyright Copyright (c) 2006
	 * @author Guapo
	 * @see DESCore
	 */

	var des = {

		/*
		 * encrypt the string to string made up of hex return the encrypted
		 * string
		 */
		strEnc : function(data, firstKey, secondKey, thirdKey) {

			var leng = data.length;
			var encData = "";
			var firstKeyBt, secondKeyBt, thirdKeyBt, firstLength, secondLength, thirdLength;
			if (firstKey != null && firstKey != "") {
				firstKeyBt = this.getKeyBytes(firstKey);
				firstLength = firstKeyBt.length;
			}
			if (secondKey != null && secondKey != "") {
				secondKeyBt = this.getKeyBytes(secondKey);
				secondLength = secondKeyBt.length;
			}
			if (thirdKey != null && thirdKey != "") {
				thirdKeyBt = this.getKeyBytes(thirdKey);
				thirdLength = thirdKeyBt.length;
			}

			if (leng > 0) {
				if (leng < 4) {
					var bt = this.strToBt(data);
					var encByte;
					if (firstKey != null && firstKey != "" && secondKey != null
							&& secondKey != "" && thirdKey != null
							&& thirdKey != "") {
						var tempBt;
						var x, y, z;
						tempBt = bt;
						for (x = 0; x < firstLength; x++) {
							tempBt = this.enc(tempBt, firstKeyBt[x]);
						}
						for (y = 0; y < secondLength; y++) {
							tempBt = this.enc(tempBt, secondKeyBt[y]);
						}
						for (z = 0; z < thirdLength; z++) {
							tempBt = this.enc(tempBt, thirdKeyBt[z]);
						}
						encByte = tempBt;
					} else {
						if (firstKey != null && firstKey != ""
								&& secondKey != null && secondKey != "") {
							var tempBt;
							var x, y;
							tempBt = bt;
							for (x = 0; x < firstLength; x++) {
								tempBt = this.enc(tempBt, firstKeyBt[x]);
							}
							for (y = 0; y < secondLength; y++) {
								tempBt = this.enc(tempBt, secondKeyBt[y]);
							}
							encByte = tempBt;
						} else {
							if (firstKey != null && firstKey != "") {
								var tempBt;
								var x = 0;
								tempBt = bt;
								for (x = 0; x < firstLength; x++) {
									tempBt = this.enc(tempBt, firstKeyBt[x]);
								}
								encByte = tempBt;
							}
						}
					}
					encData = this.bt64ToHex(encByte);
				} else {
					var iterator = parseInt(leng / 4);
					var remainder = leng % 4;
					var i = 0;
					for (i = 0; i < iterator; i++) {
						var tempData = data.substring(i * 4 + 0, i * 4 + 4);
						var tempByte = this.strToBt(tempData);
						var encByte;
						if (firstKey != null && firstKey != ""
								&& secondKey != null && secondKey != ""
								&& thirdKey != null && thirdKey != "") {
							var tempBt;
							var x, y, z;
							tempBt = tempByte;
							for (x = 0; x < firstLength; x++) {
								tempBt = this.enc(tempBt, firstKeyBt[x]);
							}
							for (y = 0; y < secondLength; y++) {
								tempBt = this.enc(tempBt, secondKeyBt[y]);
							}
							for (z = 0; z < thirdLength; z++) {
								tempBt = this.enc(tempBt, thirdKeyBt[z]);
							}
							encByte = tempBt;
						} else {
							if (firstKey != null && firstKey != ""
									&& secondKey != null && secondKey != "") {
								var tempBt;
								var x, y;
								tempBt = tempByte;
								for (x = 0; x < firstLength; x++) {
									tempBt = this.enc(tempBt, firstKeyBt[x]);
								}
								for (y = 0; y < secondLength; y++) {
									tempBt = this.enc(tempBt, secondKeyBt[y]);
								}
								encByte = tempBt;
							} else {
								if (firstKey != null && firstKey != "") {
									var tempBt;
									var x;
									tempBt = tempByte;
									for (x = 0; x < firstLength; x++) {
										tempBt = this
												.enc(tempBt, firstKeyBt[x]);
									}
									encByte = tempBt;
								}
							}
						}
						encData += this.bt64ToHex(encByte);
					}
					if (remainder > 0) {
						var remainderData = data.substring(iterator * 4 + 0,
								leng);
						var tempByte = this.strToBt(remainderData);
						var encByte;
						if (firstKey != null && firstKey != ""
								&& secondKey != null && secondKey != ""
								&& thirdKey != null && thirdKey != "") {
							var tempBt;
							var x, y, z;
							tempBt = tempByte;
							for (x = 0; x < firstLength; x++) {
								tempBt = this.enc(tempBt, firstKeyBt[x]);
							}
							for (y = 0; y < secondLength; y++) {
								tempBt = this.enc(tempBt, secondKeyBt[y]);
							}
							for (z = 0; z < thirdLength; z++) {
								tempBt = this.enc(tempBt, thirdKeyBt[z]);
							}
							encByte = tempBt;
						} else {
							if (firstKey != null && firstKey != ""
									&& secondKey != null && secondKey != "") {
								var tempBt;
								var x, y;
								tempBt = tempByte;
								for (x = 0; x < firstLength; x++) {
									tempBt = this.enc(tempBt, firstKeyBt[x]);
								}
								for (y = 0; y < secondLength; y++) {
									tempBt = this.enc(tempBt, secondKeyBt[y]);
								}
								encByte = tempBt;
							} else {
								if (firstKey != null && firstKey != "") {
									var tempBt;
									var x;
									tempBt = tempByte;
									for (x = 0; x < firstLength; x++) {
										tempBt = this
												.enc(tempBt, firstKeyBt[x]);
									}
									encByte = tempBt;
								}
							}
						}
						encData += this.bt64ToHex(encByte);
					}
				}
			}
			return encData;
		},

		/*
		 * chang the string into the bit array
		 * 
		 * return bit array(it's length % 64 = 0)
		 */
		getKeyBytes : function(key) {
			var keyBytes = new Array();
			var leng = key.length;
			var iterator = parseInt(leng / 4);
			var remainder = leng % 4;
			var i = 0;
			for (i = 0; i < iterator; i++) {
				keyBytes[i] = this.strToBt(key.substring(i * 4 + 0, i * 4 + 4));
			}
			if (remainder > 0) {
				keyBytes[i] = this.strToBt(key.substring(i * 4 + 0, leng));
			}
			return keyBytes;
		},

		/*
		 * chang the string(it's length <= 4) into the bit array
		 * 
		 * return bit array(it's length = 64)
		 */
		strToBt : function(str) {
			var leng = str.length;
			var bt = new Array(64);
			if (leng < 4) {
				var i = 0, j = 0, p = 0, q = 0;
				for (i = 0; i < leng; i++) {
					var k = str.charCodeAt(i);
					for (j = 0; j < 16; j++) {
						var pow = 1, m = 0;
						for (m = 15; m > j; m--) {
							pow *= 2;
						}
						bt[16 * i + j] = parseInt(k / pow) % 2;
					}
				}
				for (p = leng; p < 4; p++) {
					var k = 0;
					for (q = 0; q < 16; q++) {
						var pow = 1, m = 0;
						for (m = 15; m > q; m--) {
							pow *= 2;
						}
						bt[16 * p + q] = parseInt(k / pow) % 2;
					}
				}
			} else {
				for (i = 0; i < 4; i++) {
					var k = str.charCodeAt(i);
					for (j = 0; j < 16; j++) {
						var pow = 1;
						for (m = 15; m > j; m--) {
							pow *= 2;
						}
						bt[16 * i + j] = parseInt(k / pow) % 2;
					}
				}
			}
			return bt;
		},

		/*
		 * chang the bit(it's length = 4) into the hex
		 * 
		 * return hex
		 */
		bt4ToHex : function(binary) {
			var hex;
			switch (binary) {
			case "0000":
				hex = "0";
				break;
			case "0001":
				hex = "1";
				break;
			case "0010":
				hex = "2";
				break;
			case "0011":
				hex = "3";
				break;
			case "0100":
				hex = "4";
				break;
			case "0101":
				hex = "5";
				break;
			case "0110":
				hex = "6";
				break;
			case "0111":
				hex = "7";
				break;
			case "1000":
				hex = "8";
				break;
			case "1001":
				hex = "9";
				break;
			case "1010":
				hex = "A";
				break;
			case "1011":
				hex = "B";
				break;
			case "1100":
				hex = "C";
				break;
			case "1101":
				hex = "D";
				break;
			case "1110":
				hex = "E";
				break;
			case "1111":
				hex = "F";
				break;
			}
			return hex;
		},

		/*
		 * chang the hex into the bit(it's length = 4)
		 * 
		 * return the bit(it's length = 4)
		 */
		hexToBt4 : function(hex) {
			var binary;
			switch (hex) {
			case "0":
				binary = "0000";
				break;
			case "1":
				binary = "0001";
				break;
			case "2":
				binary = "0010";
				break;
			case "3":
				binary = "0011";
				break;
			case "4":
				binary = "0100";
				break;
			case "5":
				binary = "0101";
				break;
			case "6":
				binary = "0110";
				break;
			case "7":
				binary = "0111";
				break;
			case "8":
				binary = "1000";
				break;
			case "9":
				binary = "1001";
				break;
			case "A":
				binary = "1010";
				break;
			case "B":
				binary = "1011";
				break;
			case "C":
				binary = "1100";
				break;
			case "D":
				binary = "1101";
				break;
			case "E":
				binary = "1110";
				break;
			case "F":
				binary = "1111";
				break;
			}
			return binary;
		},

		/*
		 * chang the bit(it's length = 64) into the string
		 * 
		 * return string
		 */
		byteToString : function(byteData) {
			var str = "";
			for (i = 0; i < 4; i++) {
				var count = 0;
				for (j = 0; j < 16; j++) {
					var pow = 1;
					for (m = 15; m > j; m--) {
						pow *= 2;
					}
					count += byteData[16 * i + j] * pow;
				}
				if (count != 0) {
					str += String.fromCharCode(count);
				}
			}
			return str;
		},

		bt64ToHex : function(byteData) {
			var hex = "";
			for (i = 0; i < 16; i++) {
				var bt = "";
				for (j = 0; j < 4; j++) {
					bt += byteData[i * 4 + j];
				}
				hex += this.bt4ToHex(bt);
			}
			return hex;
		},

		hexToBt64 : function(hex) {
			var binary = "";
			for (i = 0; i < 16; i++) {
				binary += this.hexToBt4(hex.substring(i, i + 1));
			}
			return binary;
		},

		/*
		 * the 64 bit des core arithmetic
		 */

		enc : function(dataByte, keyByte) {
			var keys = this.generateKeys(keyByte);
			var ipByte = this.initPermute(dataByte);
			var ipLeft = new Array(32);
			var ipRight = new Array(32);
			var tempLeft = new Array(32);
			var i = 0, j = 0, k = 0, m = 0, n = 0;
			for (k = 0; k < 32; k++) {
				ipLeft[k] = ipByte[k];
				ipRight[k] = ipByte[32 + k];
			}
			for (i = 0; i < 16; i++) {
				for (j = 0; j < 32; j++) {
					tempLeft[j] = ipLeft[j];
					ipLeft[j] = ipRight[j];
				}
				var key = new Array(48);
				for (m = 0; m < 48; m++) {
					key[m] = keys[i][m];
				}
				var tempRight = this.xor(this.pPermute(this.sBoxPermute(this.xor(
						this.expandPermute(ipRight), key))), tempLeft);
				for (n = 0; n < 32; n++) {
					ipRight[n] = tempRight[n];
				}

			}

			var finalData = new Array(64);
			for (i = 0; i < 32; i++) {
				finalData[i] = ipRight[i];
				finalData[32 + i] = ipLeft[i];
			}
			return this.finallyPermute(finalData);
		},

		dec : function(dataByte, keyByte) {
			var keys = this.generateKeys(keyByte);
			var ipByte = this.initPermute(dataByte);
			var ipLeft = new Array(32);
			var ipRight = new Array(32);
			var tempLeft = new Array(32);
			var i = 0, j = 0, k = 0, m = 0, n = 0;
			for (k = 0; k < 32; k++) {
				ipLeft[k] = ipByte[k];
				ipRight[k] = ipByte[32 + k];
			}
			for (i = 15; i >= 0; i--) {
				for (j = 0; j < 32; j++) {
					tempLeft[j] = ipLeft[j];
					ipLeft[j] = ipRight[j];
				}
				var key = new Array(48);
				for (m = 0; m < 48; m++) {
					key[m] = keys[i][m];
				}

				var tempRight = this.xor(this.pPermute(this.sBoxPermute(this.xor(
						this.expandPermute(ipRight), key))), tempLeft);
				for (n = 0; n < 32; n++) {
					ipRight[n] = tempRight[n];
				}
			}

			var finalData = new Array(64);
			for (i = 0; i < 32; i++) {
				finalData[i] = ipRight[i];
				finalData[32 + i] = ipLeft[i];
			}
			return this.finallyPermute(finalData);
		},

		initPermute : function(originalData) {
			var ipByte = new Array(64);
			for (i = 0, m = 1, n = 0; i < 4; i++, m += 2, n += 2) {
				for (j = 7, k = 0; j >= 0; j--, k++) {
					ipByte[i * 8 + k] = originalData[j * 8 + m];
					ipByte[i * 8 + k + 32] = originalData[j * 8 + n];
				}
			}
			return ipByte;
		},

		expandPermute : function(rightData) {
			var epByte = new Array(48);
			for (i = 0; i < 8; i++) {
				if (i == 0) {
					epByte[i * 6 + 0] = rightData[31];
				} else {
					epByte[i * 6 + 0] = rightData[i * 4 - 1];
				}
				epByte[i * 6 + 1] = rightData[i * 4 + 0];
				epByte[i * 6 + 2] = rightData[i * 4 + 1];
				epByte[i * 6 + 3] = rightData[i * 4 + 2];
				epByte[i * 6 + 4] = rightData[i * 4 + 3];
				if (i == 7) {
					epByte[i * 6 + 5] = rightData[0];
				} else {
					epByte[i * 6 + 5] = rightData[i * 4 + 4];
				}
			}
			return epByte;
		},

		xor : function(byteOne, byteTwo) {
			var xorByte = new Array(byteOne.length);
			for (i = 0; i < byteOne.length; i++) {
				xorByte[i] = byteOne[i] ^ byteTwo[i];
			}
			return xorByte;
		},

		sBoxPermute : function(expandByte) {

			var sBoxByte = new Array(32);
			var binary = "";
			var s1 = [
					[ 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7 ],
					[ 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8 ],
					[ 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0 ],
					[ 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 ] ];

			/* Table - s2 */
			var s2 = [
					[ 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10 ],
					[ 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5 ],
					[ 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15 ],
					[ 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 ] ];

			/* Table - s3 */
			var s3 = [
					[ 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8 ],
					[ 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1 ],
					[ 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7 ],
					[ 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 ] ];
			/* Table - s4 */
			var s4 = [
					[ 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15 ],
					[ 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9 ],
					[ 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4 ],
					[ 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 ] ];

			/* Table - s5 */
			var s5 = [
					[ 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9 ],
					[ 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6 ],
					[ 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14 ],
					[ 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 ] ];

			/* Table - s6 */
			var s6 = [
					[ 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11 ],
					[ 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8 ],
					[ 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6 ],
					[ 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 ] ];

			/* Table - s7 */
			var s7 = [
					[ 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1 ],
					[ 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6 ],
					[ 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2 ],
					[ 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12 ] ];

			/* Table - s8 */
			var s8 = [
					[ 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7 ],
					[ 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2 ],
					[ 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8 ],
					[ 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11 ] ];

			for (m = 0; m < 8; m++) {
				var i = 0, j = 0;
				i = expandByte[m * 6 + 0] * 2 + expandByte[m * 6 + 5];
				j = expandByte[m * 6 + 1] * 2 * 2 * 2 + expandByte[m * 6 + 2]
						* 2 * 2 + expandByte[m * 6 + 3] * 2
						+ expandByte[m * 6 + 4];
				switch (m) {
				case 0:
					binary = this.getBoxBinary(s1[i][j]);
					break;
				case 1:
					binary = this.getBoxBinary(s2[i][j]);
					break;
				case 2:
					binary = this.getBoxBinary(s3[i][j]);
					break;
				case 3:
					binary = this.getBoxBinary(s4[i][j]);
					break;
				case 4:
					binary = this.getBoxBinary(s5[i][j]);
					break;
				case 5:
					binary = this.getBoxBinary(s6[i][j]);
					break;
				case 6:
					binary = this.getBoxBinary(s7[i][j]);
					break;
				case 7:
					binary = this.getBoxBinary(s8[i][j]);
					break;
				}
				sBoxByte[m * 4 + 0] = parseInt(binary.substring(0, 1));
				sBoxByte[m * 4 + 1] = parseInt(binary.substring(1, 2));
				sBoxByte[m * 4 + 2] = parseInt(binary.substring(2, 3));
				sBoxByte[m * 4 + 3] = parseInt(binary.substring(3, 4));
			}
			return sBoxByte;
		},

		pPermute : function(sBoxByte) {
			var pBoxPermute = new Array(32);
			pBoxPermute[0] = sBoxByte[15];
			pBoxPermute[1] = sBoxByte[6];
			pBoxPermute[2] = sBoxByte[19];
			pBoxPermute[3] = sBoxByte[20];
			pBoxPermute[4] = sBoxByte[28];
			pBoxPermute[5] = sBoxByte[11];
			pBoxPermute[6] = sBoxByte[27];
			pBoxPermute[7] = sBoxByte[16];
			pBoxPermute[8] = sBoxByte[0];
			pBoxPermute[9] = sBoxByte[14];
			pBoxPermute[10] = sBoxByte[22];
			pBoxPermute[11] = sBoxByte[25];
			pBoxPermute[12] = sBoxByte[4];
			pBoxPermute[13] = sBoxByte[17];
			pBoxPermute[14] = sBoxByte[30];
			pBoxPermute[15] = sBoxByte[9];
			pBoxPermute[16] = sBoxByte[1];
			pBoxPermute[17] = sBoxByte[7];
			pBoxPermute[18] = sBoxByte[23];
			pBoxPermute[19] = sBoxByte[13];
			pBoxPermute[20] = sBoxByte[31];
			pBoxPermute[21] = sBoxByte[26];
			pBoxPermute[22] = sBoxByte[2];
			pBoxPermute[23] = sBoxByte[8];
			pBoxPermute[24] = sBoxByte[18];
			pBoxPermute[25] = sBoxByte[12];
			pBoxPermute[26] = sBoxByte[29];
			pBoxPermute[27] = sBoxByte[5];
			pBoxPermute[28] = sBoxByte[21];
			pBoxPermute[29] = sBoxByte[10];
			pBoxPermute[30] = sBoxByte[3];
			pBoxPermute[31] = sBoxByte[24];
			return pBoxPermute;
		},

		finallyPermute : function(endByte) {
			var fpByte = new Array(64);
			fpByte[0] = endByte[39];
			fpByte[1] = endByte[7];
			fpByte[2] = endByte[47];
			fpByte[3] = endByte[15];
			fpByte[4] = endByte[55];
			fpByte[5] = endByte[23];
			fpByte[6] = endByte[63];
			fpByte[7] = endByte[31];
			fpByte[8] = endByte[38];
			fpByte[9] = endByte[6];
			fpByte[10] = endByte[46];
			fpByte[11] = endByte[14];
			fpByte[12] = endByte[54];
			fpByte[13] = endByte[22];
			fpByte[14] = endByte[62];
			fpByte[15] = endByte[30];
			fpByte[16] = endByte[37];
			fpByte[17] = endByte[5];
			fpByte[18] = endByte[45];
			fpByte[19] = endByte[13];
			fpByte[20] = endByte[53];
			fpByte[21] = endByte[21];
			fpByte[22] = endByte[61];
			fpByte[23] = endByte[29];
			fpByte[24] = endByte[36];
			fpByte[25] = endByte[4];
			fpByte[26] = endByte[44];
			fpByte[27] = endByte[12];
			fpByte[28] = endByte[52];
			fpByte[29] = endByte[20];
			fpByte[30] = endByte[60];
			fpByte[31] = endByte[28];
			fpByte[32] = endByte[35];
			fpByte[33] = endByte[3];
			fpByte[34] = endByte[43];
			fpByte[35] = endByte[11];
			fpByte[36] = endByte[51];
			fpByte[37] = endByte[19];
			fpByte[38] = endByte[59];
			fpByte[39] = endByte[27];
			fpByte[40] = endByte[34];
			fpByte[41] = endByte[2];
			fpByte[42] = endByte[42];
			fpByte[43] = endByte[10];
			fpByte[44] = endByte[50];
			fpByte[45] = endByte[18];
			fpByte[46] = endByte[58];
			fpByte[47] = endByte[26];
			fpByte[48] = endByte[33];
			fpByte[49] = endByte[1];
			fpByte[50] = endByte[41];
			fpByte[51] = endByte[9];
			fpByte[52] = endByte[49];
			fpByte[53] = endByte[17];
			fpByte[54] = endByte[57];
			fpByte[55] = endByte[25];
			fpByte[56] = endByte[32];
			fpByte[57] = endByte[0];
			fpByte[58] = endByte[40];
			fpByte[59] = endByte[8];
			fpByte[60] = endByte[48];
			fpByte[61] = endByte[16];
			fpByte[62] = endByte[56];
			fpByte[63] = endByte[24];
			return fpByte;
		},

		getBoxBinary : function(i) {
			var binary = "";
			switch (i) {
			case 0:
				binary = "0000";
				break;
			case 1:
				binary = "0001";
				break;
			case 2:
				binary = "0010";
				break;
			case 3:
				binary = "0011";
				break;
			case 4:
				binary = "0100";
				break;
			case 5:
				binary = "0101";
				break;
			case 6:
				binary = "0110";
				break;
			case 7:
				binary = "0111";
				break;
			case 8:
				binary = "1000";
				break;
			case 9:
				binary = "1001";
				break;
			case 10:
				binary = "1010";
				break;
			case 11:
				binary = "1011";
				break;
			case 12:
				binary = "1100";
				break;
			case 13:
				binary = "1101";
				break;
			case 14:
				binary = "1110";
				break;
			case 15:
				binary = "1111";
				break;
			}
			return binary;
		},
		/*
		 * generate 16 keys for xor
		 * 
		 */
		generateKeys : function(keyByte) {
			var key = new Array(56);
			var keys = new Array();

			keys[0] = new Array();
			keys[1] = new Array();
			keys[2] = new Array();
			keys[3] = new Array();
			keys[4] = new Array();
			keys[5] = new Array();
			keys[6] = new Array();
			keys[7] = new Array();
			keys[8] = new Array();
			keys[9] = new Array();
			keys[10] = new Array();
			keys[11] = new Array();
			keys[12] = new Array();
			keys[13] = new Array();
			keys[14] = new Array();
			keys[15] = new Array();
			var loop = [ 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 ];

			for (i = 0; i < 7; i++) {
				for (j = 0, k = 7; j < 8; j++, k--) {
					key[i * 8 + j] = keyByte[8 * k + i];
				}
			}

			var i = 0;
			for (i = 0; i < 16; i++) {
				var tempLeft = 0;
				var tempRight = 0;
				for (j = 0; j < loop[i]; j++) {
					tempLeft = key[0];
					tempRight = key[28];
					for (k = 0; k < 27; k++) {
						key[k] = key[k + 1];
						key[28 + k] = key[29 + k];
					}
					key[27] = tempLeft;
					key[55] = tempRight;
				}
				var tempKey = new Array(48);
				tempKey[0] = key[13];
				tempKey[1] = key[16];
				tempKey[2] = key[10];
				tempKey[3] = key[23];
				tempKey[4] = key[0];
				tempKey[5] = key[4];
				tempKey[6] = key[2];
				tempKey[7] = key[27];
				tempKey[8] = key[14];
				tempKey[9] = key[5];
				tempKey[10] = key[20];
				tempKey[11] = key[9];
				tempKey[12] = key[22];
				tempKey[13] = key[18];
				tempKey[14] = key[11];
				tempKey[15] = key[3];
				tempKey[16] = key[25];
				tempKey[17] = key[7];
				tempKey[18] = key[15];
				tempKey[19] = key[6];
				tempKey[20] = key[26];
				tempKey[21] = key[19];
				tempKey[22] = key[12];
				tempKey[23] = key[1];
				tempKey[24] = key[40];
				tempKey[25] = key[51];
				tempKey[26] = key[30];
				tempKey[27] = key[36];
				tempKey[28] = key[46];
				tempKey[29] = key[54];
				tempKey[30] = key[29];
				tempKey[31] = key[39];
				tempKey[32] = key[50];
				tempKey[33] = key[44];
				tempKey[34] = key[32];
				tempKey[35] = key[47];
				tempKey[36] = key[43];
				tempKey[37] = key[48];
				tempKey[38] = key[38];
				tempKey[39] = key[55];
				tempKey[40] = key[33];
				tempKey[41] = key[52];
				tempKey[42] = key[45];
				tempKey[43] = key[41];
				tempKey[44] = key[49];
				tempKey[45] = key[35];
				tempKey[46] = key[28];
				tempKey[47] = key[31];
				switch (i) {
				case 0:
					for (m = 0; m < 48; m++) {
						keys[0][m] = tempKey[m];
					}
					break;
				case 1:
					for (m = 0; m < 48; m++) {
						keys[1][m] = tempKey[m];
					}
					break;
				case 2:
					for (m = 0; m < 48; m++) {
						keys[2][m] = tempKey[m];
					}
					break;
				case 3:
					for (m = 0; m < 48; m++) {
						keys[3][m] = tempKey[m];
					}
					break;
				case 4:
					for (m = 0; m < 48; m++) {
						keys[4][m] = tempKey[m];
					}
					break;
				case 5:
					for (m = 0; m < 48; m++) {
						keys[5][m] = tempKey[m];
					}
					break;
				case 6:
					for (m = 0; m < 48; m++) {
						keys[6][m] = tempKey[m];
					}
					break;
				case 7:
					for (m = 0; m < 48; m++) {
						keys[7][m] = tempKey[m];
					}
					break;
				case 8:
					for (m = 0; m < 48; m++) {
						keys[8][m] = tempKey[m];
					}
					break;
				case 9:
					for (m = 0; m < 48; m++) {
						keys[9][m] = tempKey[m];
					}
					break;
				case 10:
					for (m = 0; m < 48; m++) {
						keys[10][m] = tempKey[m];
					}
					break;
				case 11:
					for (m = 0; m < 48; m++) {
						keys[11][m] = tempKey[m];
					}
					break;
				case 12:
					for (m = 0; m < 48; m++) {
						keys[12][m] = tempKey[m];
					}
					break;
				case 13:
					for (m = 0; m < 48; m++) {
						keys[13][m] = tempKey[m];
					}
					break;
				case 14:
					for (m = 0; m < 48; m++) {
						keys[14][m] = tempKey[m];
					}
					break;
				case 15:
					for (m = 0; m < 48; m++) {
						keys[15][m] = tempKey[m];
					}
					break;
				}
			}
			return keys;
		}
	}
	// end-------------------------------------------------------------------------------------------------------------
	/*
	 * function test() {
	 * 
	 * var msg = "abcdefgh"; var bt = this.strToBt(msg);
	 * 
	 * var key = "12345678"; var keyB = this.strToBt(key);
	 * 
	 * var encByte = this.enc(bt,keyB);
	 * 
	 * var enchex = this.bt64ToHex(encByte); endata.value=enchex;
	 * 
	 * var encStr = this.hexToBt64(enchex); alert("encStr="+encStr); var eByte =
	 * new Array(); for(m=0;m<encStr.length;m++){ eByte[m] =
	 * parseInt(encStr.substring(m,m+1)); } var decbyte= this.dec(eByte,keyB)
	 * var decmsg= this.byteToString(decbyte); alert("decbyte="+decbyte);
	 * alert("decmsg="+decmsg); }
	 * 
	 * des.strEnc($("#tbPassword").val(), _csrf)
	 */